---
 test/test-content_negotation.py |    2 ++
 1 file changed, 2 insertions(+)

--- a/test/test-content_negotation.py
+++ b/test/test-content_negotation.py
@@ -71,11 +71,13 @@ def test_content_negotiation_raises_an_h
 
 
 # warnings
+@pytest.mark.vcr
 def test_content_negotiation_throws_warnings():
     with pytest.warns(UserWarning):
         cn.content_negotiation(ids=["10.1126/science.169.3946.635", "foo"])
 
 
+@pytest.mark.vcr
 def test_content_negotiation_throws_warnings_can_be_suppressed():
     warnings.filterwarnings("ignore")
     x = cn.content_negotiation(ids=["10.1126/science.169.3946.635", "foo"])